Q. No.To inhibit ovulation, the corpus luteum secretes:
1. inhibin
2. activin
3. estrogen
4. progesterone
1. inhibin
2. activin
3. estrogen
4. progesterone
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Just before the endometrium is shed during menstruation:
1. blood levels of estrogen and progesterone decrease.
2. blood levels of estrogen and progesterone increase.
3. the corpus luteum gets fully developed.
4. ovulation occurs.
Blastocyst gets implanted on the:
1. myometrium
2. perimetrium
3. endometrium
4. wall of the oviduct
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The thick transparent glycoprotein membrane surrounding a mammalian ovum before implantation is called:
| 1. | oolemma | 2. | corona radiata |
| 3. | zona pellucida | 4. | cumulus oophorus |
The formation of the three embryonic germ layers is called:
| 1. | morulation | 2. | blastulation |
| 3. | neurulation | 4. | gastrulation |
The rudimentary alimentary cavity of an embryo at the gastrula stage is called:
1. vegetal pole
2. primitive streak
3. archenteron
4. blastocoel
An infant can get passive immunity from:
| 1. | infection | 2. | colostrum |
| 3. | anti-Rh Ig | 4. | vaccination with live vaccines |
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Morula stage is:
1. the stage of implantation
2. a hollow ball of cells enclosing a fluid filled space
3. a collection of 16-32 cells resembling a raspberry
4. a group of cells that do not undergo cleavage divisions
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